Bremerhaven's Zoo am Meer said it would introduce four extra female penguins from Sweden to the group to see if the males really were gay.
But zoo director Heike Kueck said "gay groups worldwide have been cursing us since that announcement".
Gay groups insisted that penguins had a right to form couples without human interference, she said.
Somebody tell me this a joke. Please? Tell me ScrappleFace hacked their site, or Iowahawk, or maybe the BBC's careless reporter was stoned out of his gourd. Maybe some homosexual activist groups are trying to get free publicity: Or maybe they've kissed goodbye to all connections with rationality as they cower from the chance that they might be wrong.